106 results about "Lower Jaw Tooth" patented technology

An endoscopic bite block, with teeth position defining regions which guide the subject's teeth to grip the bite block in their natural position, with the teeth of the upper jaw positioned further out than the lower jaw teeth. These teeth position defining regions are also preferably curved to match the curved shape of the jaw. The upper and lower parts of the front plate of the bite block may also be positioned at different distances out, so that upper and lower lip regions both contact the front plate snuggly. The bite block may be used with separate oral / nasal cannulae, or may incorporate breath sampling or gas supply cannulae. A flexible flapped curtain at the outer end of the bite block may be provided to largely enclose the inner volume of the bite block to enable more accurate capnographic sampling under conditions of wide-open mouth breathing.

The invention discloses a method for building a three-dimensional tooth-and-jaw fusion model. The method includes the steps that data is collected in the occlusion state, and a skull CT image is rebuilt, laser scanning of a gypsum occlusion model is subjected to digital processing; picture processing and the image matching function are based on a reverse engineering software Geomagic Studio, a method based on point matching and the iterative algorithm are combined in the reverse engineering software, a gypsum dentition occlusion model and CT rebuilt dentitions are matched, indistinct CT rebuilt dentitions are replaced, and finally, the three-dimensional tooth-and-jaw fusion model matched in the occlusion state that a CT rebuilt jaw model and the gypsum dentition occlusion model are integrated is obtained. CT imaging artifacts caused by intraoral metal and the error, caused by upper-and-lower-jaw dentition overlapping in the occlusion state, between the occlusion relationship and the practical intraoral occlusion position in the fusion model are reduced, and therefore the accuracy of computer aided design and the treating effect are improved.

The invention discloses an automatic tooth arrangement method and an automatic tooth arrangement device, relating to the medical field of digital orthodontics, and solving the problem that the automatic tooth arrangement is poor in accuracy. The main technical scheme is as follows: the automatic tooth arrangement method comprises the following steps: acquiring three-dimensional data of dentition needing orthodontics and three-dimensional data of craniofacial jaw bone; selecting feature points on the three-dimensional data of the dentition and the three-dimensional data of the craniofacial jaw bone; constructing tooth arrangement planes and dental arch curves according to the selected feature points, wherein the tooth arrangement planes comprise a median sagittal plane, a horizontal plane and a tooth arrangement occlusal plane, and the dental arch curves comprise an upper jaw tooth arrangement curve and a lower jaw tooth arrangement curve; moving teeth in the three-dimensional data of the dentition according to the preset tooth positions, so that a target dentition after orthodontics is formed, and the preset tooth positions comprise the target upper and lower dentition sagittal position, the target upper and lower dentition vertical position, and the target upper jaw and lower jaw among-dentition position. The automatic tooth arrangement method and the automatic tooth arrangement device are mainly used for the tooth arrangement in the orthodontics.

The invention relates to a mandibular gingival flap stretching fixation clamp which has simple structure, is convenient to use and is used in gingival flap implant operation. When in use, a left alveolar bone fixing arm and a right alveolar bone fixing arm clamp the alveolar bone from the left and right sides, a left gingival flap stretching arm and a right gingival flap stretching arm can move oppositely, gingival flap stretching plates on the left and right gingival flap stretching arms stretch the gingival flap to the left and right sides so that the surgical site on the top of the alveolar bone can be fully exposed for operation, the dental drill for holing and the implant can not contact the gingival soft tissue, and the soft tissue can not be carried into the cavity to affect synosteosis; and after the gingival flap is stretched by the stretching fixation clamp, the hands of the doctor can be free and the operation can be performed smoothly. The mandibular gingival flap stretching fixation clamp is mainly used to stretch and fix the gingival flap after gingival is flapped in the mandibular teeth implant operation and can also be used in the mandibular teeth alveolar ridge trimming and forming operation.

One embodiment of the present disclosure is directed to a method used in the making of a dental restoration, which comprises the steps of determining a tooth flat at a patient's tooth, and evaluating the tooth flat to provide a geometric characteristic data of the first tooth flat. The characteristic data are used to provide a computer model of a jaw motion under occlusal contact between teeth in the patient's upper and lower jaws. In one embodiment, the method helps facilitating the preparation of dental restorations.

The invention provides an invisible appliance which comprises a single-jaw appliance and / or a double-jaw appliance. The single-jaw appliance comprises a maxillary tooth socket and a functional auxiliary part, and the double-jaw appliance comprises a double-jaw tooth socket and a functional auxiliary part. The double-jaw tooth socket comprises an upper jaw tooth socket, a lower jaw tooth socket anda connecting occlusal plate, the functional auxiliary part is selected from at least one of a palatal side plate, a lingual guide wing, an anterior tooth occlusion opening assembly and an extraoral traction assembly, and the anterior tooth occlusion opening assembly comprises a gingival margin bulge and a stress application pad; the extraoral traction assembly comprises an outer side tube and anextra-oral traction bow, and all parts are made of transparent or semi-transparent materials, so that the appliance is invisible. The appliance has a wide clinical application range, is suitable for malocclusion deformity of bone surface type II malocclusion and mild type III and can provide an efficient correction force system in the three-dimensional direction and especially greatly improve thecorrection efficiency in the vertical direction.

In the invention, a method for using a dynamic virtual articulator for simulating occlusion during a change in the initial position of the lower jaw or fragments thereof, and for modeling the position of the teeth in relation to one another and the position and shape of false teeth is described, said method being carried out with a computer. The method includes the following steps: providing a virtual articulator comprising a virtual three-dimensional model of the upper jaw and dental arch and a virtual three-dimensional model of the lower jaw and dental arch, resembling the upper jaw and upper teeth and the lower jaw and lower teeth, respectively, of the patient; and providing simulated movements of the virtual upper jaw and the virtual lower jaw in relation to one another for simulating dynamic occlusion, during which penetrating and non-penetrating contact may occur between teeth in the virtual upper and virtual lower jaw. Providing the virtual articulator further includes providing virtual three-dimensional models of the temporomandibular joints, resembling the heads of the lower jaw, the mandibular fossae, and the articular tubercles of the temporal bones, and carrying out simulated movements of the jaws in relation to one another is preceded by clinically or virtually setting initial and final positions. Furthermore, the virtual surfaces of the heads of the lower jaw and the virtual surfaces of the articular tubercles and the mandibular fossae of the temporal bones of the patient are disengaged. Also, a non-volatile machine-readable medium is described with a stored code containing instructions which, when executed, allow the proposed method to be carried out. The group of inventions makes it possible to provide a virtual articulator that simulates as closely as possible the actual processes occurring in the patient's mouth.

The invention provides an oral appliance manufacturing method for adjusting the relative position of the upper jaw and the lower jaw. The appliance manufacturing method includes the steps that an integrated upper-jaw digital model integrated with an upper-jaw pad model and an upper-jaw tooth model and an integrated lower-jaw digital model integrated with a lower-jaw pad model and a lower-jaw tooth model are generated; a manufacturing system is controlled by the integrated upper-jaw digital model and the integrated lower-jaw digital model to manufacture an upper-jaw appliance body and a lower-jaw appliance body, wherein the upper-jaw appliance body is basically a negative model of a positive model represented by the integrated upper-jaw digital model, the lower-jaw appliance body is basically a negative model of a positive model represented by the integrated lower-jaw digital model, wherein the relative position of the upper jaw and the lower jaw of a patient conforms to a correcting target through the integrated upper-jaw digital model and the integrated lower-jaw digital model under the occlusion state of wearing the upper-jaw appliance body and the lower-jaw appliance body.

Provided is a piece of snore-ceasing equipment, used for the occlusion of the upper and lower jaw teeth and comprising an upper tooth brace, a lower brace, and a connecting piece, wherein the upper and lower braces are provided with a dead wall and an occlusion portion for positioning the upper and lower law teeth, making the teeth evenly receive force, and making the lower jaw extend forward to prevent the laryngeal soft tissue from falling toward the breath channel which will reduce the breathing channel, so the air friction inside the breathing channel will not be increased, thereby preventing the mucous membrane and secretion inside the breathing channel from generating vibration, accordingly preventing the generation of the snores. The snore-creasing equipment is made of elastic material in an integral manner, thereby saving the process of connecting the upper and lower tooth braces. Moreover, after occlusion, it will be elastically deformed, thereby saving the trouble of making tooth die according to the tooth shape of the users, which can substantially reduce the manufacturing cost and improve the comfort level for users.

A bracketless invisible appliance for guiding lower jaw to move includes an upper jaw tooth socket and a lower jaw tooth socket. The upper jaw tooth socket has an upper protrusion, and the lower jaw tooth socket has a lower protrusion. When the upper jaw tooth socket and the lower jaw tooth socket are occluded, the upper protrusion makes contact with the lower protrusion. The bracketless invisibleappliance has the advantages of good wearing comfort, no influence on the daily life of a wearer, and improvement of guiding lower jaw to move with mandibular retrusion.

The invention relates to the field of denture repair methods, in particular to a denture repair method. The repair method comprises the steps as follows: a) mounting a scanning pole on an implant in apatient mouth; b) scanning image information about upper jaw teeth and lower jaw teeth in the patient mouth with the scanning pole in a computer by a scanner; c) obtaining complete scanning pole information from a software database of the computer to determine the depth of the scanning pole in upper and lower jaw tooth models and the angle and position of the scanning pole on the upper and lowerjaw tooth models; d) designing matched dental crowns and abutments according to all image information of upper and lower jaw teeth and the scanning pole. The scanning pole is directly mounted in the patient mouth, image scanning is performed on the upper and lower jaw teeth in the patient mouth by the scanner, the obtained image information is transmitted directly through the computer, the dentalcrowns and the abutments are produced according to the image information, the trouble of producing plaster models is avoided, and the efficiency is improved.

A masticatory orthodontic correction device includes at least one correction unit with a rigid body. The correction unit is worn on a maxillary or mandibular dental arch of a patient during mastication, and the shape of the correction unit is maintained without deformation when accommodating teeth. At least one first recess is formed in the correction unit and has a shape which leaves a first space around a first tooth of the maxillary or mandibular dental arch. The first tooth is a tooth in malposition requiring correction, and the first space allows the first tooth to move therein during mastication. At least one buffering member is formed in the first space for transmitting and buffering force between the first recess and the first tooth. The orthodontic correction function of the device is active under occlusal loads generated during mastication.

The invention provides an elastic push rod suitable for a bracket-free invisible correction device. The elastic push rod structurally comprises a push rod body made of an elastic material and inserting heads arranged at two ends of the push rod body, integrated with the push rod body and made of an elastic material, and each inserting head sequentially comprises an expanding head, a neck contracting relative to the head and a tail expanding relative to the neck from an end away from the push rod body to an end close to the same. It would be best if the head of each inserting head is designed to be in the shape of an expanding ball, each neck is in the shape of a column with diameter smaller than ball-shaped diameter of the corresponding head, and each tail is in the shape of a disc with diameter greater than that of the corresponding neck. When in use, two ends of the elastic push rod are respectively inserted into sleeve rings of the upper-lower jaw bracket-free invisible correction device, tension caused by traction of a conventional rubber band is changed into thrust through deformation resilience of the push rod, upper-lower jaw dentition relation can be adjusted, press-in force can be applied to teeth, retention force of the bracket-free invisible correction device can be increased, and correction effect is improved.

The invention relates to the field of medical apparatuses and instruments, in particular to a child oral examination device. The child oral examination device comprises an upper jaw bracket and a lower jaw bracket, an upper tooth groove matched with upper jaw teeth is formed in the upper jaw bracket, a lower tooth groove matched with lower jaw teeth is formed in the lower jaw bracket, the upper jaw bracket and the lower jaw bracket are of hollow structures, the upper jaw bracket and the lower jaw bracket of the hollow structures are each provided with at least one camera for shooting the toothsurface condition, the cameras are slidingly arranged from one end to the other end in the tooth arrangement direction, the oral is not required to be opened for a long time, harm to the oral is reduced, the dread feeling when oral examination is carried out of children can be reduced, an examination is smoothly carried out accordingly, and the examination result is more accurate; in addition, pictures collected by the cameras can be easily recorded and stored through electronic data, medical workers conveniently and collectively analyze and process the data, and whole physical examination time is shortened.

The invention discloses a collision detection algorithm for calculating occlusion areas of upper and lower jaws. The collision detection algorithm comprises the following steps: updating the position of a triangular mesh of an established occlusion model in real time; pairing triangular mesh points of upper and lower jaw tooth models and carrying out screening; judging whether mutual collision occurs between the point pairs according to a normal vector; obtaining an occlusion area according to the distance between the point pairs and displaying the occlusion area. According to the collision detection algorithm, the occlusion condition and collision condition of the teeth in the tooth arrangement process can be correctly displayed, so that visual occlusion data is provided for the doctors, the calculation speed is fast and the working efficiency is greatly improved.

The invention relates to an adjusting guide making method. The method comprises following steps: an upper jaw 3D model and a lower jaw 3D model of a patient are obtained with a 3D scanning technology,and a 3D position relation of upper jaw dentition and lower jaw dentition of the patient in different states is obtained; an occlusion contact relation of the patient in different states is obtainedon the basis of the 3D position relation; lower jaw positions of the patient in different states are gathered in 3D software, a repair form of upper jaw anterior teeth is designed based on this, and adiagnostic model is formed; an ideal repair effect of the upper anterior teeth of the patient and a position relation of the upper anterior teeth and the lower jaw dentition in different states are obtained through 3D design on the basis of the 3D model; occlusal interference is avoided by adjusting incisal form of lower jaw anterior teeth, and an adjusting guide is designed by the 3D software onthe basis of the adjusted incisal form of lower jaw anterior teeth; and the diagnostic model and the adjusting guide are obtained through 3D printing. The adjusting guide made with the method can rapidly and accurately adjust and grind dental tissue.

The invention discloses an invisible correction method for treating class 2 and class 3 malocclusion by using an occlusion repositioning device, which comprises the following steps: respectively fixing the occlusion repositioning device on the mandibular or maxillary posterior tooth area on both sides, taking a maxillary and mandibular full-mouth model, filling a plaster model, scanning, transmitting an obtained STL file to invisible correction design software, performing multi-step invisible correction design, finally forming an STL design file, outputting the STL design file to a 3D printer to print a female mold, and pressing a transparent high polymer material on the female mold to form the bracket-free invisible corrector. The design process of the invention comprises the following steps: firstly, fixing an occlusion repositioning device to a back tooth area, connecting the back tooth area as a whole, not designing movement, only correcting an anterior tooth area, correcting the back tooth area, and finally finely adjusting the positions of upper and lower jaw teeth, thereby finishing orthodontic treatment of class 2 and class 3 malocclusion.

The invention relates to an electric toothbrush and a manufacture method of a brush head; the electric toothbrush comprises a drive motor, a power source, a control device and a brush head and is characterized in that the brush head is arc in shape and may be kept in oral cavity, the top and bottom of the brush head are each provided with a semi-enclosed bristle face, and each bristle face is provided with an inner tooth bristle face, an outer tooth bristle face and an occlusion bristle face, with each face having blocking bundles. The electric toothbrush is capable of cleaning upper jaw teeth and lower jaw teeth at the same time. The invention also provides the manufacture method of the brush head. The toothbrush provided herein is higher in efficiency and convenient to operate, confirms to the physiological structure of a human body and is capable of correcting bad brushing action to avoid tooth injury.

The invention provides a posterior tooth decompression bite plate and a manufacturing method thereof, relates to the technical field of orthodontic instruments, and is used for improving the treatmenteffect of treating temporal-mandibular joint disorder comprehensive syndromes. The posterior tooth decompression bite plate comprises a retainer and a bite guide body, the retainer extends in a curveconsistent with the dentition in shape and comprises a palate side wall, a buccal side wall and an occlusal surface, the palate side wall and the buccal side wall are oppositely arranged, the occlusal surface is connected between the palate side wall and the buccal side wall, and the palate side wall, the buccal side wall and the occlusal surface define a tooth socket used for being fixed to thedentition. Wherein the occlusion guide body is arranged in a molar area of the retention body, comprises an occlusion surface used for being propped against jaw teeth, and is used for strutting an upper jaw dentition and a lower jaw dentition and enabling a lower jaw condylar process to retreat to an edge position limited by a temporal-mandibular ligament. The posterior tooth decompression bite plate provided by the invention is used for treating temporomandibular joint diseases.

The invention relates to a three-dimensional tooth mold alignment method, a tooth structure, a three-dimensional model alignment method and a structural member. The three-dimensional tooth mold alignment method comprises the following steps: receiving a digitized upper jaw tooth mold, a digitized lower jaw tooth mold and a digitized occlusion tooth mold; carrying out rotation treatment to the upper jaw tooth mold and the lower jaw tooth mold through a principal component analysis method; cutting the three-dimensional point cloud of the upper jaw tooth mold and the three-dimensional point cloud of the lower jaw tooth mold, so that only the outer side surfaces are reserved; and carrying out three-dimensional point cloud alignment on the upper jaw tooth mold, the lower jaw tooth mold and the occlusion tooth mold by adopting an iterative nearest neighbor point algorithm. According to the three-dimensional tooth mold alignment method, by optimizing the cutting mode, on one hand, the distance between the point clouds can be shortened, and on the other hand, the initial search corresponding points of the point clouds can be accurately positioned, so that the alignment success rate of the three-dimensional point clouds is greatly improved; and moreover, only the outer side surfaces are reserved, so that the calculation amount for calculating alignment by an iterative algorithm is simplified, and a rapid and accurate splicing effect can be achieved.

The invention relates to a digitizing design method of an individual function bionic crown shape. The digitizing design method comprises the steps that upper and lower jaw tooth columns in normal occlusion are scanned in batches as a standard template database; tooth position preparation bodies to be repaired, adjacent teeth and opposite jaw teeth are scanned to be recorded as data D1; the adjacent teeth and the opposite jaw teeth in the D1 are used as common areas to be correspondingly matched with data in the standard template database, and matched data D2 are selected; crown data in the D2which have the same tooth position with teeth to be repaired are fused with the tooth position preparation bodies to be repaired, and initial data of the repairing bodies are generated; intercuspal occlusion is conducted, and no intersection between the opposite jaw teeth is adjusted; a functional occlusal surface on a tooth crown of an opposite side same area of the two mesiocclusion and distocclusion adjacent teeth and a tooth arch is extracted, and a movement trail of the tooth position to be repaired is generated; and an enveloping surface of the movement of the opposite jaw tooth cusps istaken as a functional occlusal surface form of the teeth to be repaired. According to the digitizing design method, the process of designing of tooth bionic axial surfaces, the functional occlusal surfaces and physiological wearing surfaces by a senior dental expert can be imitated, and rapid bionic designing is achieved.

The invention relates to a tooth segmentation and reconstruction method based on a CBCT image and a storage medium, and the method comprises the steps: carrying out the self-defined layer-by-layer labeling of CBCT data, carrying out the automatic statistics of a labeled tooth center point, carrying out the preprocessing of a CBCT data set, and carrying out the recognition of a CBCT image based on an open-source deep learning platform TensorFlow and a full-convolution neural network model. Designing and training to obtain a CBCT tooth image segmentation network model; a probability value of each voxel is obtained through model output obtained through training, optimization of separation and combination is carried out on overlapping of upper and lower jaw teeth, refining processing is carried out on the shape of a root tip, and finally a tooth three-dimensional model is reconstructed. According to the method, the deep learning method is utilized, the teeth in the three-dimensional CBCT image can be directly segmented, meanwhile, adjacent teeth making contact with each other are separated, segmentation and three-dimensional reconstruction of the single tooth are achieved, the method has the advantages of being efficient, accurate, high in robustness and the like, and good tooth segmentation and three-dimensional reconstruction results can be obtained in the noise complex CBCT image.

The invention provides customised intraoral snore-ceasing equipment, which is characterized in that a 3D printing technology and a memory metal spring are used for manufacturing snore-ceasing equipment which is fit with a user's teeth, is light and can freely move after being worn. The technical scheme of the customised intraoral snore-ceasing equipment comprises an upper jaw tooth socket, a lowerjaw tooth socket and a memory metal spring assembly which connects the upper jaw tooth socket with the lower jaw tooth socket; the lower jaw tooth socket is positioned below the upper jaw tooth socket, and the lower jaw tooth socket protrudes forward to the front surface of the upper jaw tooth socket; the memory metal spring assembly comprises an upper jaw spring, a lower jaw spring and a locking device for connecting the upper jaw spring and the lower jaw spring, wherein the lower jaw spring is connected with the lower jaw tooth socket, and the position of the lower jaw spring in the locking device is adjustable.

The invention relates to the technical field of customized denture production, in particular to an upper occlusion process of multi-functional base plate of articulator. The process includes the following steps: A, taking a model, B, modifying the model, C, inserting nails, D, yellowing, E, applying a model holder, F, scraping rim, G, drilling nail hole, H, sawing open, I, writing model number, J, applying articulator, wherein based on occlusion record aligning and articulate the working models of both the upper and lower jaw teeth, fixing with hot-melt adhesive, applying suitable articulator base plates on the articulator upper and lower magnetic plates based on the height of the teeth working models, closing the articulator and fixing the tooth working models to the center of the articulator, K, cleaning and smoothing. The multi-functional base plate of articulator has different size options which can be collocated conveniently. The process has the advantages of simple operation and control, minimizing the gap between the teeth working model and the articulator base plate, thereby minimizing the gypsum consumption, and lowering the production costs.

The invention discloses a holding and fixing device for wigs, which is characterized in that the structure comprises an upper handle (1), an upper bow (2), upper claws (3), a lower handle (4), and a lower bow (5), lower claws (6), connecting hinges (7), wigs (8), plaid (9), the upper pinch handle (1) is curved outwards in an arc, and the upper bow (2) Composed of left petals (20), right petals (21) and central petals (22), the upper claws (3) are curved downwards in an arc, and the lower claws (6) are curved outwards in an arc, The lower bowknot (5) is composed of a lower left petal (50), a lower right petal (51) and a lower central petal (52). The holding and fixing device for wigs of the present invention is provided with detachable wigs, so that the new hair accessories are provided with detachable wigs to meet the needs of customers who need wig decorations.

The present invention relates to a bionic reconstruction method for positions and postures of tooth spaces in an occlusion function state. The bionic reconstruction method comprises the following steps: 1) respectively scanning an upper jaw dentition and a lower jaw dentition of a patient by using an intraoral three-dimensional scanner to obtain three-dimensional data J1 and J2; 2) scanning the whole dentition of upper and lower jaw teeth of the patient after occlusion by a normal strength by using the intraoral three-dimensional scanner to obtain three-dimensional data J0; 3) extracting three-dimensional data of a crown part of each tooth in the J1 and J2 in a software; and 4) registering the extracted crown data of each tooth to the J0. The bionic reconstruction method can realize the bionic positions and postures of the tooth spaces in the occlusion function state. On the basis of an existing oral cavity three-dimensional scanning technology, the bionic reconstruction method furtherimproves precision of obtaining the positions and postures of all tooth spaces in the individual occlusion function state, and thus improves the precision of a design scheme for diagnosis and treatment of oral cavity based on the data.

The invention discloses a multifunctional final impression device, a using method and a digital complete denture manufacturing method. The multifunctional final impression device comprises an upper jaw base, a lower jaw base, an upper jaw dentition, a lower jaw dentition and an external interface, the bottom of the upper jaw base is provided with an upper jaw dentition interface matched with the upper jaw dentition, and the top of the lower jaw base is provided with a lower jaw dentition interface matched with the lower jaw dentition; a tracing plate connector is arranged at the bottom of theupper jaw base, the upper jaw tracing plate is connected into the tracing plate connector to be fixed to the upper jaw base, and a positioner is installed on the upper jaw tracing plate; a positioningplate interface is formed in the top of the lower jaw base, the lower jaw positioning plate is connected into the positioning plate interface to be fixed with the lower jaw base, a positioning needleis mounted on the lower jaw positioning plate, and the lower jaw base is connected with the positioner through the positioning needle; the external connector is arranged at the front end of the upperjaw base and connected with a handle connecting piece or a face arch connecting piece.

The invention provides a mandibular alveolar bone horizontal distractor and relates to the field of mandibular alveolar bone defect repair devices. The mandibular alveolar bone horizontal distractor comprises a guide rail made of nickel-titanium memory alloy, at least two fixed titanium plates fixed on the guide rails and at least one moving titanium plate, side faces of long sides and wide sidesof the guide rail are matched with a mandibular alveolar bone in shape, a plurality of holes are uniformly formed in the length direction of the guide rail, and a cross rod is formed among the holes;the moving titanium plate is slidably connected onto the guide rail through a sliding mechanism, the sliding mechanism comprises a sliding frame and a screw penetrating the sliding frame, the guide rail penetrates the sliding frame, and a portion, arranged in the sliding frame, of the screw is in threaded connection with the cross rod on the guide rail. The mandibular alveolar bone horizontal distractor is suitable for wide mandibular alveolar process defect range, especially for mandibul alveolar process in the middle and on two sides of mandible, and can effectively repair moderate to severemandibular alveolar defect.